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Clustering Index is an index defined with the CLUSTER
keyword and determines where the row should be inserted to
maintain the clustering sequene
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What kind of database is db2?
Can one database have multiple instances?
what is the responsibility of the construction superintendent
What is the difference between "db2ilist" and "db2 get instance" commands in DB2 Database Server?
What is an instance database?
Explain about rct in db2?
What is isolation level in db2?
SET is the ANSI standard for variable assignment, SELECT is not. SET can only assign one variable at a time, SELECT can make multiple assignments at once. If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign one of the values to the variable and hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one) When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from it's previous value) As far as speed differences - there are no direct differences between SET and SELECT. However SELECT's ability to make multiple assignments in one shot does give it a slight speed advantage over SET.
How can deadlocks be resolved?
by using cursors , we can access particular records from the table based on some condition, i want to delete those selected records, how can we write a query for this in the program?
How many databases can be created inside an instance in db2 ?
Explain in brief how does db2 determine what lock-size to use?
What is dbrm in db2 database?
How to check table size in db2 sap?
What is difference between rollback and commit?
